Question

Find the area and the circumference of a circle with radius 9cm.

Answer 1

@Ryan_Kochan

Answer 2

Circumference = 2 • π • radius = π • diameter

Circle Area = π • r² = ¼ • π • d²

Answer 3

\[A = \pi \times r^2\]

Answer 4

\[C = 2 \times \pi \times r\]

Answer 5

Circumference = 2 x 3.14 x 9

Area = 3.14 x 9^2

Answer 6

A= 254.34
C= 56.52

Answer 7

Correct

Answer 8

would A be cm^2 and C be cm^3

Answer 9

I think
Not 100% sure on that one :P

Answer 10

A : cm² and C: cm

Answer 11

cm³ is used for volume